Haystacks Balboa were a hard-rock band from Queens in New York City, whose sole eponymous album was released on Polydor in 1970 & featured two songwriting contributions from Larry West, brother of Mountain's Leslie West. This album has also been issued on CD by Audio Archives under the alternate title 'Detoxified'.
These are videos from concerts where Haystacks Balboa played, so they may be of other bands that played the concert as well.
Black Sabbath / Haystacks Balboa Oct 30, 1970 Glassboro, New Jersey, United States Embedded by Zimtrim